如果我已经告诉过您一次，那么我就已经告诉您两次了。
如果这些文件已经存在，在您继续这个练习之前请进行备份。
If these files already exist, make backups before you continue with this exercise.
如果您已经拥有要处理的数据，则又是完全不同的一种情况。
If you already have the data at your disposal, that's a very different situation.
如果您已经有了用户名和密码，就使用这些凭证登录。
If you already have a username and password, use those credentials to log in.
如果在第二块硬盘已经有分区，只需要格式化您所需要的那些分区。
If there are partitions already on the second disk, simply re-format whatever ones you need.
如果您已经有了数据库连结，那么就可以直接从步骤4继续。
If you have an existing database connection you may proceed to step 4 now.
如果您的应用程序已经有了XML接口，您将可能需要使用文档样式。
If your application already has XML interfaces, you will probably want to use document style.
如果您已经激活了这些选项，您的旧的业务逻辑性就会被保存。
If you have this option enabled, your old business logic is kept.
如果结果与所期望的不一样，则您已经找到了一个错误。
如果您已经登录到了一个站点，在完成时一定要记住退出。
If you are authenticated (logged on) to a site, always logoff after you finish.
如果您已经安装了2.81SDK，那么最好先卸载它。
If you have the 2.81 SDK already installed, it is best to uninstall it first.
如果您已经安装了Git，那么可以跳过这一步。
如果您已经对数据进行压缩，那么可以看一看TIFFWriteRawStrip。
IF you have already compressed data, then have a look at the TIFFWriteRawStrip instead.
如果您已经安装python easy_install工具，则只需发出命令：easy_installnose。
If you have the Python easy_install tool already installed, you can simply issue the command easy_install nose.
如果您一直在关注我们的系列，就已经知道所有这些内容。
If you have followed our series so far, then you know all of this already.
在任何特定的时间，如果您只需要处理一个应用软件的一个开发工作就已经算很幸运的事了。
It would be nice if you only ever had to deal with one development effort for an application at any given time.
或在您电子邮箱的收件箱中，如果您已经注册电子邮箱。
如果您想要重复这个步骤，那么请确保您已经保存了提取请求。
If you want to repeat this step, be sure to save the extract request.
如果您已经基本了解SVG，那么本篇技巧文章将对您有所帮助。
This tip will be helpful if you already have a basic understanding of SVG.
如果您已经改变了一个名称，另一个名称也要改变。
如果您已经指定了自己的压缩库，而丢失了您的机器，那么不用担心！
If you specify your own compression library and you lose your machine, don't worry!
如果您已经准备好开始编程，那么可以跳到技术性崩溃。
If you are ready to start coding, skip to the technical breakdown.
如果您想回信，我们已经给您附上了贴好邮票写好地址的信封。
PS In case you want to write back, we have enclosed a stamped addressed envelope.
如果您是公司电话，我已经把话费寄给了您。
如果您可以在浏览器中阅读此篇文章，就证明您已经准备就绪了。
You're reading this article in your browser, so you've already got it.
如果您曾经有过网上购物的经历，您一定已经看到过它。
丽安：我们已经吃过了，谢谢您。不过如果可以参观一下贵公司倒是件很好的事情。
Lian: We've already eaten thank you, but it would be good to look around.
如果您已经有一个编译服务的帐号，这是最容易的一步。
If you already have your Build Service Account, this is the easiest step.
如果您已经有一项演示文稿，您也可以将其导入。
If you already have a presentation, you can import that as well.
如果您已经有一项演示文稿，您也可以将其导入。
If you already have a presentation, you can import that as well.
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